<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
    protected $_id;

    /**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	public function authenticate()
	{
		$user = User::model()->login()->find('LOWER(email)=?',array (strtolower($this->username)));
        
		if(($user===null) || (md5($this->password)!==$user->password))                
                    $this->errorCode = self::ERROR_USERNAME_INVALID;
                    else
                    {
                        $this->_id = $user->getUserId(); // Будем использовать в качестве идентификатора id пользователя.
       
                        $this->username = $user->firstname; //теперь имя залогинвшегося будет доступно в приложении Yii::app->user->name;
                        $this->errorCode = self::ERROR_NONE;
                    }
                 return !$this->errorCode;
	}
        
        public function getId() {
            return $this->_id;
        }
}